**Definitions:**

**Pound Per Square Inch** (abbreviations: **psi, or lb/in2**): is a unit of pressure or of stress based on avoirdupois units. It is the pressure resulting from a force of one pound-force applied to an area of one square inch.

**Kilopound Per Square Foot** (abbreviations: **ksf, or kips/ft2**): is a British (Imperial) and American pressure unit which is directly related to the ksi pressure unit by a factor of 144 (1 sq ft = 12 in x 12 in = 144 sq in). Where, 1 kilopound per square foot equals 47.8803 kilopascals.

## How to Convert Pounds Per Square Inches to Kilopounds Per Square Feet

*Example: How many kilopounds per square feet are equivalent to 21.67 pounds per square inches?*

As;

1 pounds per square inches = 0.14400009216006 kilopounds per square feet

21.67 pounds per square inches = Y kilopounds per square feet

Assuming Y is the answer, and by criss-cross principle;

Y equals 21.67 times 0.14400009216006 over 1

(i.e.) Y = 21.67 * 0.14400009216006 / 1 = 3.1204819971085 kilopounds per square feet

Answer is: 3.1204819971085 kilopounds per square feet are equivalent to 21.67 pounds per square inches.

*Practice Question: Convert the following units into ksf:*

N.B.: After working out the answer to each of the next questions, click adjacent button to see the correct answer.

( i ) 41.13 psi

( ii ) 4.35 psi

( iii ) 89.65 psi